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Finding the Fourth Proportional to 14,574.12, 20,112.34 and 7,950.12

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Solution

The fourth proportional to 14,574.12, 20,112.34 and 7,950.12 is: 10,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,574.12 : 20,112.34 = 7,950.12 : x
  2. Step 2: Convert to fraction form
    14,574.12/20,112.34 = 7,950.12/x
  3. Step 3: Cross multiply
    14,574.12x = 20,112.34 × 7,950.12
  4. Step 4: Simplify right side
    14,574.12x = 159,895,516.48
  5. Step 5: Solve for x
    x = 159,895,516.48/14,574.12
  6. Step 6: Final answer
    x = 10,971.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.